I wrote about FlashCache there, and since that I run couple
benchmarks, to see what performance benefits we can expect.
For initial tries I took sysbench oltp tests ( read-only and read-write) and case when data fully fits into L2 cache.
I made binaries for FlashCache for CentOS 5.4, kernel 2.6.18-164.15, you can download it from our testing stage. It took some efforts to make binary, you may get my instructions for CentOS on FlashCache-dev mail-list, most likely it will not work for different CentOS / Kernel.
The full results, scripts and settings are on …[Read more]